What is a maercenar? A mercenary is an old-time fighter who fought for payment in wars other than his own. More recently, mercenaries have transferred to online and no longer fight but programming or perform other services, and they are called freelancers.
Can you earn from freelancing? A lot of people say yes. When we look at sites like UpWork we see that there are some freelancers who earn more than good. It largely depends on the skills in the field you want to address. There is of course also guidance that teaches you how to become a successful freelancer on that freelancing site.
So the fight is going on online territory and it’s a fight with the laptop and the other competitors at the online jobs. For those who want to be an online mercenary, they can try to sign up for a site like UpWork and try to earn money on that site. But they need to know English and have a laptop. It is recommended that they also read the guide on that site.